--- /dev/null
+/**************************************************************************
+ *
+ * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "vmwgfx_kms.h"
+#include <drm/drm_plane_helper.h>
+
+
+#define vmw_crtc_to_sou(x) \
+ container_of(x, struct vmw_screen_object_unit, base.crtc)
+#define vmw_encoder_to_sou(x) \
+ container_of(x, struct vmw_screen_object_unit, base.encoder)
+#define vmw_connector_to_sou(x) \
+ container_of(x, struct vmw_screen_object_unit, base.connector)
+
+struct vmw_screen_object_display {
+ unsigned num_implicit;
+
+ struct vmw_framebuffer *implicit_fb;
+};
+
+/**
+ * Display unit using screen objects.
+ */
+struct vmw_screen_object_unit {
+ struct vmw_display_unit base;
+
+ unsigned long buffer_size; /**< Size of allocated buffer */
+ struct vmw_dma_buffer *buffer; /**< Backing store buffer */
+
+ bool defined;
+ bool active_implicit;
+};
+
+static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
+{
+ vmw_display_unit_cleanup(&sou->base);
+ kfree(sou);
+}
+
+
+/*
+ * Screen Object Display Unit CRTC functions
+ */
+
+static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
+{
+ vmw_sou_destroy(vmw_crtc_to_sou(crtc));
+}
+
+static void vmw_sou_del_active(struct vmw_private *vmw_priv,
+ struct vmw_screen_object_unit *sou)
+{
+ struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
+
+ if (sou->active_implicit) {
+ if (--(ld->num_implicit) == 0)
+ ld->implicit_fb = NULL;
+ sou->active_implicit = false;
+ }
+}
+
+static void vmw_sou_add_active(struct vmw_private *vmw_priv,
+ struct vmw_screen_object_unit *sou,
+ struct vmw_framebuffer *vfb)
+{
+ struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
+
+ BUG_ON(!ld->num_implicit && ld->implicit_fb);
+
+ if (!sou->active_implicit && sou->base.is_implicit) {
+ ld->implicit_fb = vfb;
+ sou->active_implicit = true;
+ ld->num_implicit++;
+ }
+}
+
+/**
+ * Send the fifo command to create a screen.
+ */
+static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
+ struct vmw_screen_object_unit *sou,
+ uint32_t x, uint32_t y,
+ struct drm_display_mode *mode)
+{
+ size_t fifo_size;
+
+ struct {
+ struct {
+ uint32_t cmdType;
+ } header;
+ SVGAScreenObject obj;
+ } *cmd;
+
+ BUG_ON(!sou->buffer);
+
+ fifo_size = sizeof(*cmd);
+ cmd = vmw_fifo_reserve(dev_priv, fifo_size);
+ /* The hardware has hung, nothing we can do about it here. */
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Fifo reserve failed.\n");
+ return -ENOMEM;
+ }
+
+ memset(cmd, 0, fifo_size);
+ cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
+ cmd->obj.structSize = sizeof(SVGAScreenObject);
+ cmd->obj.id = sou->base.unit;
+ cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
+ (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
+ cmd->obj.size.width = mode->hdisplay;
+ cmd->obj.size.height = mode->vdisplay;
+ if (sou->base.is_implicit) {
+ cmd->obj.root.x = x;
+ cmd->obj.root.y = y;
+ } else {
+ cmd->obj.root.x = sou->base.gui_x;
+ cmd->obj.root.y = sou->base.gui_y;
+ }
+
+ /* Ok to assume that buffer is pinned in vram */
+ vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
+ cmd->obj.backingStore.pitch = mode->hdisplay * 4;
+
+ vmw_fifo_commit(dev_priv, fifo_size);
+
+ sou->defined = true;
+
+ return 0;
+}
+
+/**
+ * Send the fifo command to destroy a screen.
+ */
+static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
+ struct vmw_screen_object_unit *sou)
+{
+ size_t fifo_size;
+ int ret;
+
+ struct {
+ struct {
+ uint32_t cmdType;
+ } header;
+ SVGAFifoCmdDestroyScreen body;
+ } *cmd;
+
+ /* no need to do anything */
+ if (unlikely(!sou->defined))
+ return 0;
+
+ fifo_size = sizeof(*cmd);
+ cmd = vmw_fifo_reserve(dev_priv, fifo_size);
+ /* the hardware has hung, nothing we can do about it here */
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Fifo reserve failed.\n");
+ return -ENOMEM;
+ }
+
+ memset(cmd, 0, fifo_size);
+ cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
+ cmd->body.screenId = sou->base.unit;
+
+ vmw_fifo_commit(dev_priv, fifo_size);
+
+ /* Force sync */
+ ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
+ if (unlikely(ret != 0))
+ DRM_ERROR("Failed to sync with HW");
+ else
+ sou->defined = false;
+
+ return ret;
+}
+
+/**
+ * Free the backing store.
+ */
+static void vmw_sou_backing_free(struct vmw_private *dev_priv,
+ struct vmw_screen_object_unit *sou)
+{
+ struct ttm_buffer_object *bo;
+
+ if (unlikely(sou->buffer == NULL))
+ return;
+
+ bo = &sou->buffer->base;
+ ttm_bo_unref(&bo);
+ sou->buffer = NULL;
+ sou->buffer_size = 0;
+}
+
+/**
+ * Allocate the backing store for the buffer.
+ */
+static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
+ struct vmw_screen_object_unit *sou,
+ unsigned long size)
+{
+ int ret;
+
+ if (sou->buffer_size == size)
+ return 0;
+
+ if (sou->buffer)
+ vmw_sou_backing_free(dev_priv, sou);
+
+ sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
+ if (unlikely(sou->buffer == NULL))
+ return -ENOMEM;
+
+ /* After we have alloced the backing store might not be able to
+ * resume the overlays, this is preferred to failing to alloc.
+ */
+ vmw_overlay_pause_all(dev_priv);
+ ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
+ &vmw_vram_ne_placement,
+ false, &vmw_dmabuf_bo_free);
+ vmw_overlay_resume_all(dev_priv);
+
+ if (unlikely(ret != 0))
+ sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
+ else
+ sou->buffer_size = size;
+
+ return ret;
+}
+
+static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
+{
+ struct vmw_private *dev_priv;
+ struct vmw_screen_object_unit *sou;
+ struct drm_connector *connector;
+ struct drm_display_mode *mode;
+ struct drm_encoder *encoder;
+ struct vmw_framebuffer *vfb;
+ struct drm_framebuffer *fb;
+ struct drm_crtc *crtc;
+ int ret = 0;
+
+ if (!set)
+ return -EINVAL;
+
+ if (!set->crtc)
+ return -EINVAL;
+
+ /* get the sou */
+ crtc = set->crtc;
+ sou = vmw_crtc_to_sou(crtc);
+ vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
+ dev_priv = vmw_priv(crtc->dev);
+
+ if (set->num_connectors > 1) {
+ DRM_ERROR("to many connectors\n");
+ return -EINVAL;
+ }
+
+ if (set->num_connectors == 1 &&
+ set->connectors[0] != &sou->base.connector) {
+ DRM_ERROR("connector doesn't match %p %p\n",
+ set->connectors[0], &sou->base.connector);
+ return -EINVAL;
+ }
+
+ /* sou only supports one fb active at the time */
+ if (sou->base.is_implicit &&
+ dev_priv->sou_priv->implicit_fb && vfb &&
+ !(dev_priv->sou_priv->num_implicit == 1 &&
+ sou->active_implicit) &&
+ dev_priv->sou_priv->implicit_fb != vfb) {
+ DRM_ERROR("Multiple framebuffers not supported\n");
+ return -EINVAL;
+ }
+
+ /* since they always map one to one these are safe */
+ connector = &sou->base.connector;
+ encoder = &sou->base.encoder;
+
+ /* should we turn the crtc off */
+ if (set->num_connectors == 0 || !set->mode || !set->fb) {
+ ret = vmw_sou_fifo_destroy(dev_priv, sou);
+ /* the hardware has hung don't do anything more */
+ if (unlikely(ret != 0))
+ return ret;
+
+ connector->encoder = NULL;
+ encoder->crtc = NULL;
+ crtc->primary->fb = NULL;
+ crtc->x = 0;
+ crtc->y = 0;
+ crtc->enabled = false;
+
+ vmw_sou_del_active(dev_priv, sou);
+
+ vmw_sou_backing_free(dev_priv, sou);
+
+ return 0;
+ }
+
+
+ /* we now know we want to set a mode */
+ mode = set->mode;
+ fb = set->fb;
+
+ if (set->x + mode->hdisplay > fb->width ||
+ set->y + mode->vdisplay > fb->height) {
+ DRM_ERROR("set outside of framebuffer\n");
+ return -EINVAL;
+ }
+
+ vmw_fb_off(dev_priv);
+
+ if (mode->hdisplay != crtc->mode.hdisplay ||
+ mode->vdisplay != crtc->mode.vdisplay) {
+ /* no need to check if depth is different, because backing
+ * store depth is forced to 4 by the device.
+ */
+
+ ret = vmw_sou_fifo_destroy(dev_priv, sou);
+ /* the hardware has hung don't do anything more */
+ if (unlikely(ret != 0))
+ return ret;
+
+ vmw_sou_backing_free(dev_priv, sou);
+ }
+
+ if (!sou->buffer) {
+ /* forced to depth 4 by the device */
+ size_t size = mode->hdisplay * mode->vdisplay * 4;
+ ret = vmw_sou_backing_alloc(dev_priv, sou, size);
+ if (unlikely(ret != 0))
+ return ret;
+ }
+
+ ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
+ if (unlikely(ret != 0)) {
+ /*
+ * We are in a bit of a situation here, the hardware has
+ * hung and we may or may not have a buffer hanging of
+ * the screen object, best thing to do is not do anything
+ * if we where defined, if not just turn the crtc of.
+ * Not what userspace wants but it needs to htfu.
+ */
+ if (sou->defined)
+ return ret;
+
+ connector->encoder = NULL;
+ encoder->crtc = NULL;
+ crtc->primary->fb = NULL;
+ crtc->x = 0;
+ crtc->y = 0;
+ crtc->enabled = false;
+
+ return ret;
+ }
+
+ vmw_sou_add_active(dev_priv, sou, vfb);
+
+ connector->encoder = encoder;
+ encoder->crtc = crtc;
+ crtc->mode = *mode;
+ crtc->primary->fb = fb;
+ crtc->x = set->x;
+ crtc->y = set->y;
+ crtc->enabled = true;
+
+ return 0;
+}
+
+static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
+ .save = vmw_du_crtc_save,
+ .restore = vmw_du_crtc_restore,
+ .cursor_set = vmw_du_crtc_cursor_set,
+ .cursor_move = vmw_du_crtc_cursor_move,
+ .gamma_set = vmw_du_crtc_gamma_set,
+ .destroy = vmw_sou_crtc_destroy,
+ .set_config = vmw_sou_crtc_set_config,
+ .page_flip = vmw_du_page_flip,
+};
+
+/*
+ * Screen Object Display Unit encoder functions
+ */
+
+static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
+{
+ vmw_sou_destroy(vmw_encoder_to_sou(encoder));
+}
+
+static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
+ .destroy = vmw_sou_encoder_destroy,
+};
+
+/*
+ * Screen Object Display Unit connector functions
+ */
+
+static void vmw_sou_connector_destroy(struct drm_connector *connector)
+{
+ vmw_sou_destroy(vmw_connector_to_sou(connector));
+}
+
+static struct drm_connector_funcs vmw_legacy_connector_funcs = {
+ .dpms = vmw_du_connector_dpms,
+ .save = vmw_du_connector_save,
+ .restore = vmw_du_connector_restore,
+ .detect = vmw_du_connector_detect,
+ .fill_modes = vmw_du_connector_fill_modes,
+ .set_property = vmw_du_connector_set_property,
+ .destroy = vmw_sou_connector_destroy,
+};
+
+static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
+{
+ struct vmw_screen_object_unit *sou;
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+ struct drm_crtc *crtc;
+
+ sou = kzalloc(sizeof(*sou), GFP_KERNEL);
+ if (!sou)
+ return -ENOMEM;
+
+ sou->base.unit = unit;
+ crtc = &sou->base.crtc;
+ encoder = &sou->base.encoder;
+ connector = &sou->base.connector;
+
+ sou->active_implicit = false;
+
+ sou->base.pref_active = (unit == 0);
+ sou->base.pref_width = dev_priv->initial_width;
+ sou->base.pref_height = dev_priv->initial_height;
+ sou->base.pref_mode = NULL;
+ sou->base.is_implicit = true;
+
+ drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
+ DRM_MODE_CONNECTOR_VIRTUAL);
+ connector->status = vmw_du_connector_detect(connector, true);
+
+ drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
+ DRM_MODE_ENCODER_VIRTUAL);
+ drm_mode_connector_attach_encoder(connector, encoder);
+ encoder->possible_crtcs = (1 << unit);
+ encoder->possible_clones = 0;
+
+ (void) drm_connector_register(connector);
+
+ drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
+
+ drm_mode_crtc_set_gamma_size(crtc, 256);
+
+ drm_object_attach_property(&connector->base,
+ dev->mode_config.dirty_info_property,
+ 1);
+
+ return 0;
+}
+
+int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ int i, ret;
+
+ if (dev_priv->sou_priv) {
+ DRM_INFO("sou system already on\n");
+ return -EINVAL;
+ }
+
+ if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
+ DRM_INFO("Not using screen objects,"
+ " missing cap SCREEN_OBJECT_2\n");
+ return -ENOSYS;
+ }
+
+ ret = -ENOMEM;
+ dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL);
+ if (unlikely(!dev_priv->sou_priv))
+ goto err_no_mem;
+
+ dev_priv->sou_priv->num_implicit = 0;
+ dev_priv->sou_priv->implicit_fb = NULL;
+
+ ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
+ if (unlikely(ret != 0))
+ goto err_free;
+
+ ret = drm_mode_create_dirty_info_property(dev);
+ if (unlikely(ret != 0))
+ goto err_vblank_cleanup;
+
+ for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
+ vmw_sou_init(dev_priv, i);
+
+ DRM_INFO("Screen objects system initialized\n");
+
+ return 0;
+
+err_vblank_cleanup:
+ drm_vblank_cleanup(dev);
+err_free:
+ kfree(dev_priv->sou_priv);
+ dev_priv->sou_priv = NULL;
+err_no_mem:
+ return ret;
+}
+
+int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+
+ if (!dev_priv->sou_priv)
+ return -ENOSYS;
+
+ drm_vblank_cleanup(dev);
+
+ kfree(dev_priv->sou_priv);
+
+ return 0;
+}
+
+/**
+ * Returns if this unit can be page flipped.
+ * Must be called with the mode_config mutex held.
+ */
+bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc)
+{
+ struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
+
+ if (!sou->base.is_implicit)
+ return true;
+
+ if (dev_priv->sou_priv->num_implicit != 1)
+ return false;
+
+ return true;
+}
+
+/**
+ * Update the implicit fb to the current fb of this crtc.
+ * Must be called with the mode_config mutex held.
+ */
+void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc)
+{
+ struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
+
+ BUG_ON(!sou->base.is_implicit);
+
+ dev_priv->sou_priv->implicit_fb =
+ vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb);
+}
Code Review / kvmfornfv.git / blobdiff